Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 165 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.🔗 Series or parallel circuit: “one bulb out, all go out”? (a) parallel (b) series
2. 2.🔁 Is the circuit closed or open if the switch is ON? (a) open (b) closed
3. 3.True or false: to fly kites in open fields is not safe. (a) True (b) False
4. 4.🔋 5 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
5. 5.🔌 Which metal is used for most electric wires at home? (a) rubber (b) plastic (c) copper (d) glass
6. 6.Which of these gives us electricity? (a) a computer (b) a generator (c) a water pump (d) an air conditioner
7. 7.True or false: “bulbs share the voltage” is true of a parallel circuit. (a) True (b) False
8. 8.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) wire (b) battery (c) cell (d) junction
9. 9.Which of these is a conductor? (a) a paper strip (b) a graphite rod (c) a plastic ruler (d) a rubber eraser
10. 10.🔋 6 identical 3 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
11. 11.🔗 Series or parallel circuit: “own switch for each bulb”? (a) series (b) parallel
12. 12.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
13. 13.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) wire (b) ammeter (c) battery (d) voltmeter
14. 14.💡 In a series circuit, how many paths does the current have? (a) one (b) none (c) two (d) one for each bulb
15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the metal tip (b) the plastic handle (c) the bare end (d) the steel shaft
16. 16.🔦 A circuit has a new cell, a good bulb and a switch that is ON. All the wires are firmly joined. A gap in one wire is bridged by a plastic ruler. Does the bulb glow? (a) Yes (b) No
17. 17.🔘 Which kind of switch closes when tipped over? (a) a slide switch (b) a reed switch (c) a tilt switch (d) a push button
18. 18.🔋 How many volts does one ordinary torch cell give? (a) 1.5 V (b) 230 V (c) 0.5 V (d) 15 V
19. 19.True or false: “each gets the full volts” is true of a series circuit. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a torch (b) a mixer grinder (c) an exhaust fan (d) a table fan
21. 21.True or false: triangle against a bar is the symbol for an LED. (a) False (b) True
22. 22.True or false: “one bulb out, all go out” is true of a series circuit. (a) True (b) False
23. 23.Which of these is true of a series circuit? (a) many paths for current (b) used in house wiring (c) one bulb out, all go out (d) each gets the full volts
24. 24.🔍 Which is the odd one out? (a) use mains for a project (b) fly a kite near wires (c) dry your hands first (d) poke things in a socket
25. 25.💡 5 identical bulbs are in parallel and each bulb has its own switch on its path. 2 of the switches are OFF and the rest are ON. How many bulbs glow?
26. 26.True or false: to stop if a part gets hot is not safe. (a) True (b) False
27. 27.Which drawing is the symbol for a cell? (a) a plain rectangle (b) a circle with V inside (c) a circle with M inside (d) one tall, one short bar
28. 28.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
29. 29.True or false: a plastic straw is a conductor. (a) True (b) False
30. 30.True or false: on a cell, “the shorter symbol line” means the + (positive) end. (a) False (b) True
31. 31.True or false: on a cell, “the end with a bump” means the + (positive) end. (a) False (b) True
32. 32.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
33. 33.Which of these is not safe? (a) use small battery cells (b) dry your hands first (c) throw cells in a fire (d) build with an adult near
34. 34.Which of these is not safe? (a) build with an adult near (b) use small battery cells (c) use mains for a project (d) fly kites in open fields
35. 35.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) Yes (b) No
36. 36.Which of these is not safe? (a) fly a kite near wires (b) use small battery cells (c) stay away from pylons (d) build with an adult near
37. 37.💡 4 identical bulbs are in parallel and each bulb has its own switch on its path. 3 of the switches are OFF and the rest are ON. How many bulbs glow?
38. 38.🔘 Which kind of switch closes near a magnet? (a) a toggle switch (b) a push button (c) a tilt switch (d) a reed switch
39. 39.🔍 Which is the odd one out? (a) build with an adult near (b) dry your hands first (c) use small battery cells (d) open a phone charger
40. 40.Which of these is an insulator? (a) a steel coin (b) aluminium foil (c) a metal paper clip (d) a glass marble

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids